Oil burner



Nov. 20 1923.

L. M. GOLDSMITH OIL BURNER Filed Dec. 6. 1922 Patented Nov. 2Q), 1923.

steam nozzle;

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ENTER llil. GOLDSMITH, OFEHILADELJPHIA, PENNSYLVANIA.

on. Brianna.

Application filed December 6, 1922. Serial Ito. 605,197.

ToPaZZ whom it may cdncem:

Be it known that L-Lnsmn M. GoLosMrr-H,

a citizen of the United States, residing in" Bhiladelphia, Pennsylvania, lhave invented certain llmprovements in Oil Burners, of which the following is a specification.

One object of my invention is to design a burner so that a minimum amount of steam will be used to break up the oil.

A further object of the invention is to construct the burner so that the oil will be given an initial spiral movement, which will be increased before it is subjected to jets of steam at a high velocity, the-jets being projected against the spirally flowing oil in a direction contrary to the movement of the oil so as to break up the globules of oil thoroughly and produce a mixture in the form of mist, which will readily ignite as it leaves the burner.

A still further object of the invention is to mingle the oil and steam thoroughly in the mixing chamber prior to being discharged from the burner.

Another object of'the invention is to construct an oil burner, in which steam is used to break up the oil, so that .the'pressure of the steam from the nozzle will be dissipated in the burner bybeing projected towards the walls of the mixing chamber so that the mist of oil and steam will leave the'burner under low oil pressure, combustion taking place nearer the end of the burner than in burners where the flow of steam is not retarded.

In the accompanying drawings:

Fig. 1 is a side view of my improved burner with a portion in section to illustrate the spiral path of the oil;

Fig. 2 is an enlarged sectional view of the head of the burner;

Fig. 3 is a view of the end of the burner; Fig. 4 is a transverse sectional view on the line 4-4, Fig. 2;

Fig. his a transverse sectional view on the line 5-5, Fig. 2;

i Fig. 6 is a transverse sectional view on theline 66, Fig. 2; A

Fig. 7 .is a sectional view of a tubular section connected to the oil pipe and to the Fig. 8 is an end view of the tubular section i Fig. 9 is a longitudinal sectional view of the steam nozzle; 1

Fig. 10 is an end. view of the se;

Fig. 11 is a perspective view of the tubular section;

Fig. 12 is a perspective view of the steam nozzle; and

Fig. 13 is a perspective view illustrating a modification of the tubular section.

2 is the head of my improved oil burner having a mixing chamber 18. In the walls of the chamber are right and left hand spiral grooves 15. V

'1 is an oil supply pipe having a threaded end adapted to the screw threads at the rear end of the head 2. 3 is a nozzle screwed into the forward end of the head 2 and provided with a projection 4 which is slotted at 5.

The passage 16 in the nozzle is conical and forms a portion of the mixing chamber 18.

Within the head 2 is a tubular section? at 8. In this enlargement, as Well as in the rear portion of the section, are longitudinal slots 8*. These slots are shown as straight slots in Figs. 2 and 11, but they may be spiral,'as at 8 Fig. 13.

lhe enlargement 8 of the tubular section rotate f is held between a shoulder 9 on the head for theoil. This rib 11 has a less pitch than the rib 6, increasing the spiral movement of the oil.

Screwed into the end of the tubular section is a cap 12 having a head 13 closed at the forward end and beveled at the rear, as shown at 17. In this cap is a central passage for steam connected to passages 14 which are inclined rearwardly so that the steam is projected into the path of the flowing oil. The steam, as it strikes the oil, breaks up the oil globules and deflects them into the right and left hand spiral groova 15 in the walls of the mixing chamber 18 of the head 2.

The rear portion of the head 13 of the travels through the contracted passage between the inner walls of the mixing chamber and the cap 12, then into the mixing chamber and through the contracted passage in the nozzle.

' The operation of the burner is as follows: Oil, under pressure, passes through the pipe 1 and is given an initial spiral movement by the rib 10. Then it travels through the slots 8 in the tubular section 7 and then in the spiral channel formed by the ribs 11. While traveling in a spiral path, the oil is subjected to the action of jets of steam, which are projected rearwardly against the flowing oil. The steam enters the burner under pressure through the pipe (Sand tubular section 7 as hereinbefore described. Thesteam breaks up the globules of oil and deflects the oil into the right and left hand spiral grooves 15, causing the oil to be broken up thoroughly without interfering with the forward movement of the oil.

The oil, in its passage through the head 2, is first contracted and then allowed to expand, and is contracted again before leaving the burner in a fine mist and in the best possible condition to be burned.

In a burner constructed according to this invention, the oil is not projected from the burner b the violent action of the steam. The steam tends to retardthe oil, consel guently, the flame is nearer the burner than 1t 1s 1n the types of burner using steam to project the oil.

Furthermore, the walls of the fire chamber, in which the "burner is located, are not burned out bythe action of the flame for the above reasons; and the flame produced is more intense than'the flame produced by burners of this type previously constructed.

The burner can be economically and easily manufactured and can be readily and thoroughly cleaned when necessary.

I claim:

1. The combination in an oil burner, of a head; a mixing chamber within the head, said head having a slot at its outlet end; an oil pipe attachedto the head; a steam pipe within'the burner and havin an enlarged cap located in the rear end of the mixing chamber, said head having radial pamages therein; and means for imparting a= splral movement to the oil before it passes the head, the steam being projected into the 011 without materially interfering with the forward movement of the oil.

2. The combination in an oil burner, of a head having a mixing chamber and. a slotted nozzle; an oil pipe secured to the head; and a steam plpe extending-through the oil pipe and into the head,'sa1d steam pipe having a ca located in the rear of the mixing chain r and within the head, said head having JIIClm'BQ l passages extending rearwardly for pro eetlng steam into h m ing oil, said cap contracting the passage for the mixture of oil and steam before it enters the main portion of the mixing chamber. a

3. The combination in an, oil burner, of a pipe; a head secured to the pipe and having a slotted nozzle at the end; a tube within the pipe; a-tubular section secured to the tube and located in the head and havinga spiral rib therein; longitudinal grooves at the rear of the tubular section; and a cap, having perforations therein for the escape of steam. at the outer end of said tubular section, the head having right and left hand spiral grooves in the inner walls at the nozzle so that the oil will be thoroughly broken up by the steam as it passes through the head. i

4. The combination in an oil burner, of a pipe; a head secured to the pipe having a mixing chamber and a slotted nozzle at one end; a tube within the pipe; a spiral rib, located between the tube and theinner wall of the pipe, forming a's'piral passage for the oil; a tubular section having a series of longitudinal slots at the rear end; a spiral rib on the tubular section of a less pitch than the pitch of the rib; and a cap at the" end of the tubular section having small, inclined passages extending rearwardlv, the head having a chamber in which the nozzle is located, the walls of the chamher having right and left spiral grooves opposite the nozzle.

5. The combination in an oil burner, of an oil pipe; a head secured thereto; a tubular section located in the head and having a passage therein for steam; and an enlarged cap at the end of the tubular section, closed at its forward end, said cap having a series of inclined passages at its back extending rearwardly, whereby steam is projected into the path of the oil flowing 7 ast the cap.

6. The combination in an oil burner, of an oil pipe; a head secured to the pipe; a nozzle screwed into the head.- and having a slot therein, the head having a mixing chamber with right and left hand grooves in the walls thereof; a steam tube extending through the pipe; a tubular section located in the chamber and secured to the tube; a cap at the end of the tubular section having steam passages therein inclinedrearwardly; and means for causing the spiral movement of the oil to be increased as it passes through the head and before it is broken up by the jets of steam, the grooves in the head thoroughly mixing the oil and steam before they pass through the slot in having a mixing chamber therein; a tube, 'tor the passage of steam, located within the pipe and spaced therefrom; a spiral rib within the head; an enlargement at the rear end of the tubular section having slots therein, said enlargement being held between a shoulder on the head and the end of the pipe; a. spiral ribon the tubular section; and a cap having an enlarged head secured to the tubular section and having rearwardly inclined steam passages therein, the cap being located within the mixing chamber in the head, the chamber having right and left grooves in its wall opposite the cap and the nozzle having a slot through which the mixture of steam and oil is projected.

8. The combination in an oil burner, of a pipe; a head to which the pipe is secured, said head having a mixing chamber; right and left spiral grooves in the walls of said chamber; a tube within the pipe; a tubular section, located in the head, to which the tube is attached; a spiral rib located between the tube and the pipe and forming a spiral channel for the oi1,-the rear end of the tubular section having an enlargement in which is a series of longitudinal slots for the passage of oil; a spiral rib on the tubular section of a less pitch than the rib between the tube and the pipe; a cap detachably secured to the end of the tubular section, closed at its outer end and having rearwardly inclined passages, the rear portion of the cap being beveled so as to fiare the spirally moving oil into the grooves of the head; and a. detachable nozzle at the end of the head having a passage therein for the escape of the mixture.

LESTER M. GOLDSMITH. 

